Friedrich I of Prussia

Friedrich I of Prussia (11 June 1657-25 February 1713) was the king of Prussia from from 1688 to 1713.

Biography
Friedrich was the son of Friedrich William of Brandenburg and Louise-Henriette of Orange-Nassau, and was of half-German and half-Dutch descent. He was a son of the House of Hohenzollern and was Elector of Brandenberg from 1688 to 1701, when he proclaimed himself "King in Prussia" under the auspices of the Holy Roman Empire. However, he was independent and conquered most of Poland early in his reign.